Perpetual calendar.



W. F. HUNT. PERPETUAL CALENDAR. APPLICATION FILED MAY 31, 1907.

Patented Nov. 10, 1908.

3 SHEETSSHEET 1L Havi- W6 in use:

,w. F. HUNT. PERPETUAL CALENDAR. APPL IOATION FILED MAY 31, 1907 'Patnted Now 10, 1908.

a snnrs snsn 2.

E'Jnuentop vertising purposes,

is a front or visional spaces WILLIAM F. HUNT, OF LINCOLN, NEBRASKA.

PEBPETU UALENDAR.

Specification of Letters mm.

Patented Nov. 10, 1908.

application filed May 81,1907. Serial No. 876,540.

To all whom it may concern:

Be it known that 1, WILLIAM F. Hun'nl citizen of the United States, residing at Lin- 1 coin, in the county of Lancaster and State of Nebraska, have invented certain new and useful Improvements in Perpetual Calendars; and I do hereby declare the following to be a full, clear, and exact description of the invention,-such' as will enable others skilledin the artto which it appertains to make and use the same.

This invention relates to calendars and it I has for itsobject the provision of a calendar which may be termed perpetual in that it can be changed from month to month with the current progression of time, and can also i be quickly changed so as to show what the I calendar was in one or two or more centuries in the past, or what the same will be for oneor two or more centuries in the future.

A further object of the invention is the making of such a calendar which may also beuseful either as a work of art or for ad- 'ora combination of both. of the novel method em-\ Also by means ployed in the adjustment of the parts to asl certain the divisions of past, present or fu' ture time, the article is one which will afford more or less amusement to the user. The specific objects of my invention and l, the particular advantages thereof will bet more fully pointed out in the following specification and the concluding claims, it being understood that while I have shown in the i,

accompanying drawings and shall describe herein the preferred embodiment of my in vention, yet the same may be departed from without material departure from the spirit of the invention, as shown, described and" claimed herein.

In the accom anying drawings, Figure 1 ace view of my invention; Fig. 2 is a similar view with the face disk removed to show the revolvingdial; F ig. 3 i is a central longitudinal section of Fig. 1; Figs. 4' and 5 illustrate modifications of the structure as a whole; Fig. 6 is a similar section of Fig. 4, and Fig. 7 is'a plan view of the revolving dial.

In the drawing 1 designatesya back piece or support which may be of card board or other material as referred.

2 is a revolving dial suitablyjou-rpaled on the back piece. or su port l'by'a stud or pivot 3 and'provide on its face with di- 4 formed by lines 5 drawn in which the from its center,and with holes 6 at the outer end of each of the said lines 5. In the particular form of my invention shown", as'will be seen in Fig. 2, the revolving disk ordial 2 is provided with 96 of the spaces 4 and holes 6. This number may however be varied if desired. The dial is showirindetail in Fi 7, and from this figure it will be seen tint on the face of the revolving dial '2 and disposed radially to the axis or center of rotation thereof, I columns of numerals 7 from which the calendar is formed. The columns of numerals are arranged in the divisions formed by.thc lines 5. These numerals are, as shown in Fig. 2, arranged in four divi. ions, one d1 vision being adapted and so ocated as to form calendars for the thirty one -day months, one division for the thirty day months, one division for February when it has twenty-eight days and 'one division for February when it has twenty-nine days. In

provide a plurality of the form of my invention shown there are blank divisional spaces bet-ween the thirtyone-day division of the dial and the thirtyday division and a blank divisional space between the .thirt day division and the. twenty-eight-day ivision, and all or part oi these blank spaces may be omitted ii desired which would decrease the number of divisional spaces accordingly. I

Arranged in frontof the revolvina dial 2 and confined in place on the pivot 3 is a fixed disk 8 having an extension piece 9 at its lower edge, and which piece is attached to the back piece or support 1 in any suitable manner. The sides of thecxtension E), under which the holes (5 in the disk 2 revolve, form stops againstwhich an instrument engaging the holes will contact as will be hereinafter explained. The fixed disk 8 is provided on its upper face portion with a series of lines 10 forming between them seven spacesgvhich spaces are of gradually decreasing ,width from the bottom upward, the. lines forming the same converging 'at the top towards a point similar to the lines indicatingalegrees of latitude on a globe. Within each of the spaces formed by the lines l0'is arranged a series of figures indicating yearly periods of time. The ears in each column are those rst of January occurs on the same day of the week. That is to say in the left hand column the first of Januar in all the'years represented comes in on g in the second column on Monday etc. It

t unday,

will be noted in these columns the letter L appears opposite certain years, such letter leap; year, and it obvious designating a that such desi natmg character. as well as the figures oft 1e year opposite to which it is printedln red or other color placed may be so as to quickly indicate to the eye the leap years shown in the several columns. Arran ed on the outer edge on opposite sides of t e disk or dial 8 and at the marginal edges thereof appear the names of the months of the year; July, Dee, Man, Aug, May, Jan. and Oct. appearing on the left hand side and Nov, June, Sept. and Apr. on

the right hand side, while Feb. appears at the top on the back 1, so as not to interfere with t e year column. At the bottom of the dial or disk isja cutaway portion or panel ILfbrming a segmental aperture for exposing therethrough a portion of the underlying revolving disk. At the upper and lower edges of the opening 11 are a'rran ed the throu h the panel or cut away xed disk, each of the divisions being calendar with .of the week.

initials S M T W T F S, indicating t e days of the week. As the disk or dial 2 isre .volved beneath the fixed disk, such a-part of each division as will indicate the days of a Single month of a given year will appear portion of such so arranged as to be able to show a complete the first beginning on any day As will be noted, the year columns on the fixed disk 8 have been filled in so as to show the years 1862 to 1977 in- Y rangement may one of the then revolved to the elusive, butit be changed as desired, and the number of past years decreased and those of the future ncreased or vice vers'a, as desired. On the revolving dial, as well as on the' fixed disk or dial appear two stars numbered respectively 12 and 13 and which indicate starting points in the use of the deviceas will now lfe'described. In the construction as illustrated in Figs. 1 and 2, toascertain-any given date in any givendyear, thefollowmg method is empencil oint or other oint is inserted in oles 6 near t e margin of the movable dial at the star 12, and such dialis dial by side of the portion 9, in; the form shown in Fig. 1, or 14 in the form shown in Fig. 4, which brings the movable dialto its starting p- -.vi.1i.\')ll. The point of thepenoil is then inserted in the hole 0p osite the top of the column of the face or xed dial in which the year of the date desired to be found is shown,

- and the movable dial is a sin turned to the right until stopped at t 7 star 1;? on the fixed dial. e pencil point is now inserted inthe hole, 6 on the margin of the movable dial opposite the month in e 1point opposite 7]? will be obvious that this ar standard 14 which. supports 7 right until thepencil' 1s stopped opposite the star 13 on the fixedv coming in contact with the overlying,

vhieh the date desired is found, and the dial is again turned to the right until stopped opposite the star 13, on the fixed disk or dial, and then there will be-shown through the opening 11. in such fixed dial the calendar of the month desired. The reason for this is that by the first movement of the dial. from its starting position the dial has been given .a setting in relation to the month indications dependent upon what day of the week the year started on and the month indications are so arranged that when the dial has been given its second setting the proper division of the movable dial Wlll be brought nnder the openin 11. .As'there-are seven divisions 10 the'dia can be set in seven positions by its first setting and any one of seven holes 6 brought opposite eachmonth indication so that upon the second movement of thedial from the month indication the proper calendar can be found. Where the date sought occurs during a leap year, and the month in which such date sought occurs in a month other than January in such leap year, then the movable dial .nrned to the left, except as to the month of January as to which in leap years, as well "as in other years, the dial 2 is turned to the right. The effect of reversin the direction ofrotation of the dial is to av vanee the calendar one day which. in the construction shown is due to the fact that the distance from one side to the other 9 is equal to the distance of thirteen spaces on the disk or one less than two weeks.

In Fig. 5 is shown a modification in which the year columns are on the back portion 1- instead of on the front portion.

In Fig. 4 is illustrated another modification in which is shown but'rpne dial or disk, and that'the revolving one 2, the front'piece or the said dial being cut out from outthe back piece or support 1. As will be seen in this modified construction the columns for containing the numerals denoting theyears are arranged on the back piece or support 1, as well as the desi nations of the months. The operation of 0th of these modifications is already described.

Having thus described my invention,- what I claim as new and desire to secure by Letters Patent is:

1. A calendar comprising a fixed member,

a revolving member adjustably rotatable with reference to such fixed member, and

of the projection the same as that I bearing on its face tables of numerals so.

arranged as to present the consecutive numerical designation of the days of the successive months of the year, said revolvineg member having turning apertures adapt to be engaged bya suitable turning instrument, stops to limit the turning movement and said fixed, inember having a slot or cutaway portion therein through WlllCl'l monthly calendars appear in the suceessive rotation as set forth.

2. A calendar comprising fixed rear and front members, the front member having a cut away portion, a rotating dial pivoted between said members provided with turning apertures adapted to be engaged by a suitable turning instrument,daily, monthly and yearly divisions of time imprinted on said several members, stops adapted for,

starting and stopping points of rotation of 'said rotating dial with relation to the printed matter on said several members, whereby the successive movement of said rotating dial in a given direction and. a predetermined iiecession of movements will cause the calendar for any desired month to appear benmath the cut away portion of said front or fixed member, asset forth.

, 3. In a calendar the combination with a fixed member and a rotating member, of a series of designations for the days of the month upon the rotating member. 'siaid rotating member being provided with turning a ertures adaptedto be engaged by a suita le turning instrument, a series of yearly' designations on the stationary portion of the calendar, a series of monthly designations on the stationary portion of the calendar, stops on said stationary member to limit the movement of the rotary member, said yearly and monthly designations being so arranged in relation to with other and to the designations of the days of the month on the movable 'meinher that by a predetermined manipulation in successive sequence a calen- (1211' may he au-erlained for any month of any year appearing within the limit of time of the years appearing in the yearly columns.

4. A calendar having a fixed support or bank member, a rotating member mounted thereon and having a series of holes therein in which to insert a pencil or other pointed means for rotating the same, stops on the stationary member to limit the movement of the rotary member, said rotating mem ber bearing a series of columns of figures on its face re resentingdaily and monthly divisions 0 "time, a fixed front member imposed over said rotating member and having a vcut-away portion therein and a series of figures tliereon' representin yearly divisions of time and the names 0 the twelfi'e months of the year imprinted thereon, such yearly columns of figures and the months so registering with the holes in the rotating member as to cause the column of figures representing the monthly calendar of any given'year on the rotating member -nionths of the year,.onetable being arranged for thirty day months. one table for thirtyone day months; one table for twenty-eight day months and one for twenty-nine day months. a slot or cut-aw;y portion iii the fixed member through whieh' monthly calendars appear. said calendar only showing the proper number of days for the month desired, said revolving member having turning apertures therein adapted to be engaged by asnitablc turning instrument. and stops on I the stationary member adapted to limit the movement of the revolving nien'iber.

In testimony whereof I altix my signature, in presence of two witnesses.

WILLIAM F. .iiuN'r.

\Vit messes M \i:ii: GUY NERSON, WALTER L. AN DERSON. 

